Hackers have stolen information of tens of millions of Anthem Inc. customers, in a massive data breach that ranks among the largest in corporate history. Take a look at the biggest data breaches of all time.

The company said it didn't immediately know if or to what extent information on Louisiana citizens may have been exposed.

"Through contracts with the Louisiana Department of the Treasury and Louisiana Department of Revenue, JPMorgan Chase issues prepaid debit cards for certain state agencies, including for state income tax refunds distributed by LDR, unemployment benefits paid by the Louisiana Workforce Commission and Child Support Enforcement, STEP Supportive Services and Child Care Assistance provider payments paid by the Louisiana Department of Children and Family Services," a news release from the Department of Revenue said.

The news release was issued to media outlets on Friday.

State agencies said they are working with JP Morgan Chase to keep Louisiana citizens apprised as more information about the breach becomes available.

Until then, citizens -- particularly those who have used prepaid debit cards issued on behalf of these state agencies -- are encouraged to monitor their credit statements and financial reports for any suspicious activities. They were also advised to change the passwords on their respective accounts as a precaution.

For additional information, visit the Federal Trade Commission’s website at www.consumer.ftc.gov for general information about identity theft and to learn more about reporting suspected fraudulent activities.

Dairy Queen is the latest company to get hit by a data breach, announcing customer names, payment card numbers and expiration dates were stolen from 395 stores nationwide in August and early September. Take a look at the biggest data breaches of all time.